Blindstamped 'Sander Koln-Lindenthal' credit and 'album' (recto); credited, titled in German, dated 'co. 1932' and '1972', annotated 'Abzug von 1972' and 'von G. Sander', all in pencil, stamped 'Galerie Wilde Koln' with affixed 'Album-fotogalerie' label (mount, verso), printed by Gunther Sander (the artist's son) 1972